The phrase refers to a compulsory car emissions inspection carried out inside the metropolis of San Jose, California. This inspection is a requirement for car registration renewal and possession switch, making certain automobiles working inside the space meet established air high quality requirements. Failure to cross leads to the car requiring repairs and subsequent re-inspection earlier than registration can proceed.
These inspections are essential for sustaining air high quality and public well being within the area. By figuring out and rectifying automobiles with extreme emissions, the method helps scale back pollution reminiscent of smog and dangerous gases, contributing to cleaner air and mitigating respiratory issues. The apply displays a broader historic development in the direction of environmental regulation and consciousness of the impression of car emissions on city environments.